feval

Purpose

Function evaluation.

feval('function',x1,...,xn)
[y1,y2, ...] = feval('function',x1,...,xn)

feval('function',x1, ...,xn) passes the arguments (x1, ...,xn) to the named function.

[y1,y2...] = feval('function',x1,...,xn) returns multiple output arguments.

The statements

[V,D] = feval('eig',A)
[V,D] = eig(A)

are equivalent. feval is useful in functions that accept string arguments specifying function names. For example, the function

function plotf(fun,x)
y = feval(fun,x);
plot(x,y)

can be used to graph other functions.